The fashion mogul, 37, has split from her longtime partner, actor Djimon Hounsou, 48. "Djimon Hounsou and Kimora Lee Simmons have officially separated after 5½ years," the Amistad star's rep tells People. "Though never married, they have one child together, Kenzo Lee Hounsou, who is 3½ years old."

Over on Twitter, Simmons has weighed in on the situation. "There have been quite a few hurtful rumors circulating. The truth is Djimon + I have been separated for some time. We have remained happy, loving, co-parenting friends + family. We all have much to be thankful for." Simmons had characterized her relationship with the Academy Award nominee as "kind of" engaged.

The JustFab president and creative director is also mom to two daughters by ex-husband Russell Simmons.